CN101562320B - Method and system for laser deicing for power transmission and transformation equipment - Google Patents
Method and system for laser deicing for power transmission and transformation equipment Download PDFInfo
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Abstract
The invention discloses a method and a system for laser deicing for power transmission and transformation equipment. The method comprises the steps of: adopting laser frequency conversion technology and a galvanometer scanning focusing principle; adopting a continuous or long-pulse solid laser as core deicing equipment; outputting infrared laser, partially converting the infrared laser into visible laser; coaxially outputting the infrared laser and the visible laser; focusing and irradiating on an ice-covering area of the power transmission and transformation equipment to deice through a collimating mirror, two scanning galvanometers and a focusing mirror; adopting control equipment to control the opportunity and the time of laser output of the laser and the vibration of the scanning galvanometers to ensure that the laser irradiated on the ice-covering area of the power transmission and transformation equipment performs two-dimensional mobile scanning; and observing the irradiation position of the visible laser through a tracking and aiming device to prevent the laser from damaging the power transmission and transformation equipment. The system has small volume and light weight, realizes the long-distance focusing of the laser, is favorable for removing large-area ice coating, realizes the tracking and observation of the laser deicing, prevents the laser from damaging the powertransmission and transformation equipment, and can remove ice layers under the condition of no poweroff for a conducting wire iron tower; and the system can also be used for the deicing of the power transmission and transformation equipment such as insulators, overhead transmission lines, iron towers and the like.
Description
Technical field
The invention belongs to the laser application technique field, relate to a kind of method and system that are used for laser deicing for power transmission and transformation equipment.
Background technology
Normal operation exists very big threat to icing for power system transmission line.The mode of deicing at present reaches the 20-30 kind, can be divided into four big classes: mechanical deicing, thermal ice-melting, deice naturally, hybrid mode.
The laser of high power density can be removed the ice sheet that high-voltage line, insulator, iron tower adhering on surface at a distance, belong to external heat source, need not compare with deicing mode commonly used at present at any equipment of the inner increase of electrical network, laser deicing has certain advantage and application potential.
In the present disclosed document, about having of laser deicing: the article " CO that Chinese science and technology periodical " optics and photoelectric technology " the 5th the 3rd phase of volume of June in 2007 publishes
2The research of laser hot melt deicing " the laser deicing method that proposes is to adopt CO
2Laser mainly utilizes the hot melt deicing, and it is bigger to consume energy.
Chinese invention patent application (number of patent application 200810044590.2) " utilizing the method for laser for the aerial high voltage power line deicing " has proposed a kind of method of laser ablation aerial high voltage power line icing, this method mainly adopts the short-pulse laser of low-repetition-frequency, narrow pulsewidth, high impulse energy, adopts the mode that focuses on and move that high voltage transmission line is carried out deicing.This method adopts short-pulse laser, rely on the shatter ice sheet of stress wave, there is not method and apparatus for the tracking aiming of emission laser, be difficult to control at any time the energy of output laser, target for effect produces damage easily, the icing that more can not be used for low power equipment of power transmission and transforming equipment damage threshold such as insulator is removed, and threatens power grid security; This method moves to the place apart from transmission line 30m-100m with equipment, and in actual applications, this distance can not satisfy the wild environment demand fully and be difficult to realization, so the operating distance of laser needs to increase; The laser facula size is 0.5cm-2cm in this method, carries out motion scan along the direction of power transmission line, and the icing region area of effect is less.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of method and system that are used for laser deicing for power transmission and transformation equipment are provided.
For achieving the above object, the technical solution used in the present invention is: a kind of method that is used for laser deicing for power transmission and transformation equipment, adopt laser frequency switch technology and vibration mirror scanning focusing principle, it is characterized in that: adopt solid state laser as the core deicing equipment, the output infrared laser, infrared laser partly is converted to visible laser, infrared laser and the coaxial output of visible laser, through collimating mirror, two scanning galvanometers and focus lamp, focusing shines the zone deicing of power transmission and transforming equipment icing, adopt the opportunity and the time of control appliance control laser output light, the vibration of scanning galvanometer, make the laser that shines power transmission and transforming equipment icing zone carry out two-dimentional motion scan, by the tracking aiming device visible laser irradiation position is observed, avoided the damage of laser power transmission and transforming equipment.
Above-mentioned laser deicing for power transmission and transformation equipment method, it is the continuous solid body laser of 1000W-1500W that described solid state laser adopts power output.
It is the long pulse solid state laser of 1000W-1500W that above-mentioned laser deicing for power transmission and transformation equipment method, described solid state laser also can adopt power output.
Above-mentioned laser deicing for power transmission and transformation equipment method, described collimating mirror enlarges the lasing beam diameter of laser output, and angle of divergence compression is dwindled the spot diameter after laser beam focuses on by focus lamp, obtains little focal beam spot; First scanning galvanometer will become to be parallel to the laser beam of Y-axis through the laser-beam deflection that is parallel to X-axis behind the collimating mirror, and second scanning galvanometer becomes to be parallel to the laser beam of Z axle with the above-mentioned laser-beam deflection that is parallel to Y-axis; Focus lamp focuses on the icing zone with the above-mentioned laser beam that is parallel to the Z axle, and the focal length of focus lamp is 100m-1000m, and focusing on the back spot size is 15mm-20mm.
A kind of system that is used for laser deicing for power transmission and transformation equipment, comprise laser head, frequency conversion apparatus, collimating mirror, scanning galvanometer, focus lamp, sighting device, Laser Power Devices, the scanning galvanometer power supply, control appliance and cooling device and platform, it is characterized in that: laser head, frequency conversion apparatus, collimating mirror, scanning galvanometer, focus lamp, be fixed on the platform successively with optical axis, sighting device is fixed on the platform, Laser Power Devices are to the pumping source power supply of laser head, the scanning galvanometer power supply is powered to scanning galvanometer, control appliance links to each other with the outside control mouth of Laser Power Devices with the scanning galvanometer power supply, cooling device is connected with laser head, collimating mirror and focus lamp are coated with the anti-reflection film of corresponding optical maser wavelength, platform can be fixed in ground, also can be positioned on the vehicle.
The invention has the advantages that: volume is less, weight is lighter, the realization laser far-distance focuses on, help removing the large tracts of land icing, realization is for the tracking and the observation of laser deicing, avoid the damage of laser for power equipment, can go to remove ice sheet under the situation of not cutting off the power supply for lead, iron tower, this system can be used for the deicing of power transmission and transforming equipments such as insulator, overhead transmission line, iron tower.
Description of drawings
Fig. 1 is a The field schematic diagram of the present invention.
Fig. 2 is a light path principle schematic diagram of the present invention.
Embodiment
Deicing system is positioned on the mobile device, on vehicle, drive to apart from icing power transmission and transforming equipment 100m to 1000m and locate, start laser, make laser output power less, adjust the elevation angle of laser head 1, make laser can long-distance transmissions to the icing of power transmission and transforming equipment, guarantee frequency conversion apparatus 2, collimating mirror 3, scanning galvanometer 4 and focus lamp 5 and laser head 1 same optical axis simultaneously.The infrared laser of laser head 1 output is through frequency conversion apparatus 2, part changes into visible laser, observe visible laser by sighting device 6 and focus on situation, and definite laser irradiating position, because visible laser and the coaxial output of infrared laser are stranded this and can guarantee that the infrared laser of exporting focuses on the icing place that shines power transmission and transforming equipment and finishes deicing.
Control appliance 9 links to each other with Laser Power Devices 7 outside control mouths simultaneously, the opportunity and the time of control laser output light.After laser focusing and aligning are finished, control appliance 9 control laser heads 1 power output is the 1000W-1500W infrared laser, through frequency conversion apparatus 2, part changes into visible laser, visible laser and the coaxial output of infrared laser, through collimating mirror 3, it is big that hot spot becomes, and the angle of divergence diminishes, through scanning galvanometer 4 and focus lamp 5, focusing on the back spot size is 15mm-20mm, shines on the icing apart from the power transmission and transforming equipment of deicing system 100m-1000m.Control appliance 9 gated sweep galvanometer power supplys 8, making win scanning galvanometer 12 and second scanning galvanometer 13 is the center vibration with X-axis and Z axle respectively, visible laser bundle and infrared laser beam through collimating mirror are moved in the XY flat scanning, reach and adopt the spacescan mode to cut the purpose of deicing.
In ice detachment, observe the visible laser of exporting by sighting device 6, determine the position of infrared laser irradiation and the situation that deicing is carried out, for control appliance 9 provides the protection control signal, avoid the damage of laser to power transmission and transforming equipment.
As shown in Figure 2, collimating mirror 3 enlarges the lasing beam diameter of laser head 1 output, and angle of divergence compression is dwindled the spot diameter after laser beam focuses on by focus lamp 5, obtains little focal beam spot; Collimating mirror is coated with the anti-reflection film of corresponding optical maser wavelength.The optical axis of focus lamp 5 is parallel to the Z axle, and the laser beam that will be parallel to the Z axle focuses on the icing zone.Focus lamp is coated with the anti-reflection film of corresponding optical maser wavelength, and the focal length of focus lamp is 100m-1000m.First galvanometer 12, second galvanometer 13 are vertical placement in the space; First galvanometer 12 is installed on the X-axis, and mirror surface is parallel to the Z axle, perpendicular to the XY plane, is 45 degree with the angle of X-axis and Y-axis, will be parallel to the laser beam of Y-axis through the laser-beam deflection one-tenth that is parallel to X-axis behind the collimating mirror 11; Second galvanometer 13 is installed on the Y-axis, mirror surface is parallel to X-axis, perpendicular to the YZ plane, be 45 degree with the angle of Y-axis and Z axle, to become to be parallel to the laser beam of Z axle through the laser-beam deflection that is parallel to Y-axis behind first galvanometer 12, first galvanometer and second galvanometer all are coated with 45 degree high-reflecting film layers of corresponding optical maser wavelength.
Claims (6)
1. method that is used for laser deicing for power transmission and transformation equipment, adopt laser frequency switch technology and vibration mirror scanning focusing principle, it is characterized in that: adopt solid state laser as the core deicing equipment, the output infrared laser, infrared laser partly is converted to visible laser, infrared laser and the coaxial output of visible laser, through collimating mirror, two scanning galvanometers and focus lamp, focusing shines the zone deicing of power transmission and transforming equipment icing, adopt the opportunity and the time of control appliance control laser output light, the vibration of scanning galvanometer, make the laser that shines power transmission and transforming equipment icing zone carry out two-dimentional motion scan, by the tracking aiming device visible laser irradiation position is observed, avoided the damage of laser power transmission and transforming equipment.
2. the laser deicing for power transmission and transformation equipment method that is used for as claimed in claim 1 is characterized in that: it is the continuous solid body laser of 1000W-1500W that described solid state laser adopts power output.
3. the laser deicing for power transmission and transformation equipment method that is used for as claimed in claim 1 is characterized in that: it is the long pulse solid state laser of 1000W-1500W that described solid state laser adopts power output.
4. as claim 2 or the 3 described laser deicing for power transmission and transformation equipment methods that are used for, it is characterized in that: described collimating mirror enlarges the lasing beam diameter of laser output, angle of divergence compression is dwindled the spot diameter after laser beam focuses on by focus lamp, obtains little focal beam spot; First scanning galvanometer will become to be parallel to the laser beam of Y-axis through the laser-beam deflection that is parallel to X-axis behind the collimating mirror, and second scanning galvanometer becomes to be parallel to the laser beam of Z axle with the above-mentioned laser-beam deflection that is parallel to Y-axis; Focus lamp focuses on the icing zone with the above-mentioned laser beam that is parallel to the Z axle, and the focal length of focus lamp is 100m-1000m, and focusing on the back spot size is 15mm-20mm.
5. system that is used for laser deicing for power transmission and transformation equipment, comprise laser head (1), frequency conversion apparatus (2), collimating mirror (3), scanning galvanometer (4), focus lamp (5), sighting device (6), Laser Power Devices (7), scanning galvanometer power supply (8), control appliance (9) and cooling device (10) and platform (11), it is characterized in that: laser head (1), frequency conversion apparatus (2), collimating mirror (3), scanning galvanometer (4), focus lamp (5), be fixed in successively on the platform (11) with optical axis, sighting device (6) is fixed on the platform (11), Laser Power Devices (7) are to the pumping source power supply of laser head (1), scanning galvanometer power supply (8) is powered to scanning galvanometer (4), control appliance (9) links to each other with the outside control mouth of Laser Power Devices (7) with scanning galvanometer power supply (8), cooling device (10) is connected with laser head (1), collimating mirror (3) and focus lamp (5) are coated with the anti-reflection film of corresponding optical maser wavelength, and platform (11) is positioned on the vehicle.
6. a kind of system that is used for laser deicing for power transmission and transformation equipment as claimed in claim 5 is characterized in that: described platform (11) also can be fixed in ground.
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